ASTM F1113-87(2011)
(Test Method)Standard Test Method for Electrochemical Measurement of Diffusible Hydrogen in Steels (Barnacle Electrode)
Standard Test Method for Electrochemical Measurement of Diffusible Hydrogen in Steels (Barnacle Electrode)
SIGNIFICANCE AND USE
The critical level of hydrogen in steels is that hydrogen which can build up to high concentrations at points of high triaxial stress causing embrittlement of the steel which can lead to catastrophic damage. This hydrogen can enter by various means, such as during pickling and electroplating. Means of reducing this hydrogen during processing are given in Specification B766 and Practices B183 and B242. It is still necessary, however, to know how effective these methods are. Though the ultimate reason for measuring this hydrogen is to relate it to embrittlement, this is not within the scope of this test method. As susceptibility to hydrogen embrittlement is a function of alloy type, heat treatment, intended use,and so forth, the tolerance for hydrogen must be determined by the user according to Method F519.
Though the actual hydrogen concentration is not determined in this test method, the current densities have been shown to be useful as an indication of relative hydrogen concentrations (1-3), and therefore the degree of hydrogen embrittlement (1,2). Thus, measurements can be compared to one another (see 4.1 and 7.1).
This test method is applicable as a quality control tool for processing (such as to monitor plating and baking) or to measure hydrogen uptake caused by corrosion.
This test method is nondestructive; however, if there is a coating, it must be removed by a method which has been demonstrated to neither damage the steel nor introduce hydrogen to make the measurement.
This test method is also applicable to situations producing continuous hydrogen permeation, such as high pressure hydrogen cylinders or corrosion processes. The results, however, would require a different treatment and interpretation (4).
This test method is also applicable to small parts, such as fasteners. The technique, procedure, and interpretation would, however, have to be altered.
Use of this test method on austenitic stainless steels and other face centered cubic (FCC) a...
SCOPE
1.1 This test method covers the procedure for measuring diffusible hydrogen in steels by an electrochemical method.
1.2 This test method is limited to carbon or alloy steels, excluding austenitic stainless steels.
1.3 This test method is limited to flat specimens to which the cell can be attached (see 4.6 and 4.8).
1.4 This test method describes testing on bare or plated steel after the plate has been removed (see 4.4).
1.5 This test method is limited to measurements at room temperature, 20 to 25°C (68 to 77°F).
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation: F1113 − 87 (Reapproved 2011)
Standard Test Method for
Electrochemical Measurement of Diffusible Hydrogen in
1
Steels (Barnacle Electrode)
This standard is issued under the fixed designation F1113; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Summary of Test Method
1.1 This test method covers the procedure for measuring 3.1 A hydrogen-containing part is made the anode in an
diffusible hydrogen in steels by an electrochemical method. electrochemical cell. The diffusible (atomic) hydrogen, which
comes to the metal-electrolyte interface, is oxidized to protons
1.2 This test method is limited to carbon or alloy steels,
+ + −
(H );H combineswithhydroxylions(OH )intheelectrolyte
excluding austenitic stainless steels.
toformwater.Theoxidationcurrentismeasuredandrelatedto
1.3 This test method is limited to flat specimens to which
the hydrogen concentration.
the cell can be attached (see 4.6 and 4.8).
4. Significance and Use
1.4 Thistestmethoddescribestestingonbareorplatedsteel
after the plate has been removed (see 4.4). 4.1 The critical level of hydrogen in steels is that hydrogen
which can build up to high concentrations at points of high
1.5 This test method is limited to measurements at room
triaxialstresscausingembrittlementofthesteelwhichcanlead
temperature, 20 to 25°C (68 to 77°F).
to catastrophic damage. This hydrogen can enter by various
1.6 This standard does not purport to address all of the
means, such as during pickling and electroplating. Means of
safety concerns, if any, associated with its use. It is the
reducing this hydrogen during processing are given in Speci-
responsibility of the user of this standard to establish appro-
fication B766 and Practices B183 and B242. It is still
priate safety and health practices and determine the applica-
necessary, however, to know how effective these methods are.
bility of regulatory limitations prior to use.
Though the ultimate reason for measuring this hydrogen is to
relateittoembrittlement,thisisnotwithinthescopeofthistest
2. Referenced Documents
method. As susceptibility to hydrogen embrittlement is a
2
2.1 ASTM Standards:
function of alloy type, heat treatment, intended use,and so
B183Practice for Preparation of Low-Carbon Steel for
forth, the tolerance for hydrogen must be determined by the
Electroplating
user according to Method F519.
B242Guide for Preparation of High-Carbon Steel for Elec-
4.2 Though the actual hydrogen concentration is not deter-
troplating
mined in this test method, the current densities have been
B766Specification for Electrodeposited Coatings of Cad-
shown to be useful as an indication of relative hydrogen
mium
3
concentrations (1-3), and therefore the degree of hydrogen
D1193Specification for Reagent Water
embrittlement (1,2). Thus, measurements can be compared to
F519Test Method for Mechanical Hydrogen Embrittlement
one another (see 4.1 and 7.1).
Evaluation of Plating/Coating Processes and Service En-
4.3 This test method is applicable as a quality control tool
vironments
for processing (such as to monitor plating and baking) or to
G3Practice for Conventions Applicable to Electrochemical
measure hydrogen uptake caused by corrosion.
Measurements in Corrosion Testing
4.4 This test method is nondestructive; however, if there is
a coating, it must be removed by a method which has been
1
This test method is under the jurisdiction of ASTM Committee F07 on
demonstrated to neither damage the steel nor introduce hydro-
Aerospace andAircraft and is the direct responsibility of Subcommittee F07.04 on
Hydrogen Embrittlement. gen to make the measurement.
Current edition approved Dec. 1, 2011. Published August 2012. Originally
4.5 This test method is also applicable to situations produc-
approved in 1987. Last previous edition approved in 2005 as F1113 – 87 (2005).
DOI: 10.1520/F1113-87R11. ing continuous hydrogen permeation, such as high pressure
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Boldfacenumbersinparenthesesrefertothelistofreferencesattheendofthis
the ASTM website. standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F1113 − 87 (2011)
hydrogen cylinders or corrosion processes. The results,
however,wouldrequireadifferenttreatmentandinterpretation
(4).
4.6 This test method is also applicable to s
...
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